Possible Clues:

• It was sung in Rocky Balboa's neighborhood
• Music? It's painful to perform surgery without that
• Street corner genre
• Pop style P&O deal possibly mounted
• ''Duke of Earl,'' stylistically
• Singing genre of the '50s
• Case involves court looking up notes from fifties
• Sir Henry's revolutionary work in popular music of the 1950s
• Prom conductor returned to work in nineteen fifties style
• Short work shown on box about style of pop music